Consolidated Company-Sponsored Investment Funds - Offsetting of Derivative Assets and Liabilities (Details) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Derivative Asset [Abstract]
Cash Collateral Received	$ (16,000,000)	$ (2,900,000)
Derivative Liability [Abstract]
Cash Collateral Pledged	0	(5,600,000)
VIEs
Derivative Asset [Abstract]
Gross Amounts of Recognized Assets	4,628,000	5,887,000
Gross Amounts Offset in the Statement of Financial Condition	0	0
Net Amounts of Assets Presented in the Statement of Financial Condition	4,628,000	5,887,000
Financial Instruments Collateral	0	0
Cash Collateral Received	(1,649,000)	(904,000)
Net Amount	2,979,000	4,983,000
Derivative Liability [Abstract]
Gross Amounts of Recognized Liabilities	21,376,000	18,342,000
Gross Amounts Offset in the Statement of Financial Condition	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Condition	21,376,000	18,342,000
Financial Instruments Collateral	0	0
Cash Collateral Pledged	(5,573,000)	(1,824,000)
Net Amount	15,803,000	16,518,000
VOEs
Derivative Asset [Abstract]
Gross Amounts of Recognized Assets	9,000	0
Gross Amounts Offset in the Statement of Financial Condition	0	0
Net Amounts of Assets Presented in the Statement of Financial Condition	9,000	0
Financial Instruments Collateral	0	0
Cash Collateral Received	0	0
Net Amount	9,000	0
Derivative Liability [Abstract]
Gross Amounts of Recognized Liabilities	0	0
Gross Amounts Offset in the Statement of Financial Condition	0	0
Net Amounts of Liabilities Presented in the Statement of Financial Condition	0	0
Financial Instruments Collateral	0	0
Cash Collateral Pledged	0	0
Cash Collateral Pledged	0
Net Amount	$ 0	$ 0